package com.king.first.app.process;

import com.king.first.bean.WaterSensor;
import com.king.first.utils.ContentUtils;
import org.apache.flink.api.common.eventtime.SerializableTimestampAssigner;
import org.apache.flink.api.common.eventtime.WatermarkStrategy;
import org.apache.flink.api.common.functions.MapFunction;
import org.apache.flink.streaming.api.datastream.SingleOutputStreamOperator;
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
import org.apache.flink.streaming.api.functions.ProcessFunction;
import org.apache.flink.util.Collector;

public class Flink_ProcessFunction {
    public static void main(String[] args) {
        StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment().setParallelism(1);

        SingleOutputStreamOperator<WaterSensor> waterSensorStream = env.socketTextStream(ContentUtils.HOST, 9999)
                .map(new MapFunction<String, WaterSensor>() {
                    @Override
                    public WaterSensor map(String value) throws Exception {
                        String[] datas = value.split(",");
                        return new WaterSensor(datas[0], Long.valueOf(datas[1]), Integer.valueOf(datas[2]));
                    }
                });

        WatermarkStrategy<WaterSensor> watermarkStrategy = WatermarkStrategy.<WaterSensor>forMonotonousTimestamps().withTimestampAssigner(
                new SerializableTimestampAssigner<WaterSensor>() {
                    @Override
                    public long extractTimestamp(WaterSensor element, long recordTimestamp) {
                        return element.getTs();
                    }
                }
        );
        SingleOutputStreamOperator<String> streamOperator = waterSensorStream
                .assignTimestampsAndWatermarks(watermarkStrategy)
                .process(new ProcessFunction<WaterSensor, String>() {
                    @Override
                    public void processElement(WaterSensor value, ProcessFunction<WaterSensor, String>.Context ctx, Collector<String> out) throws Exception {
                        if (value.getId().equals("wdl")) {
                            out.collect(value.getId());
                        } else if (value.getId().equals("wx")) {
                            out.collect(value.getId() + "是 ！");
                        }
                        System.out.println(ctx.timerService().currentProcessingTime());
                        System.out.println(ctx.timerService().currentWatermark());
                    }

                    @Override
                    public void onTimer(long timestamp, ProcessFunction<WaterSensor, String>.OnTimerContext ctx, Collector<String> out) throws Exception {
                        super.onTimer(timestamp, ctx, out);
                    }
                });

        streamOperator.print();

        try {
            env.execute();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
